Lochinvar & A.O. Smith 100145009 Fan Assembly

The Lochinvar & A.O. Smith 100145009 Fan Assembly is a critical combustion blower component designed for high-efficiency commercial boilers and water heaters. Also identified by part number FAN3037, this combustion fan motor provides the precise air-to-fuel ratio required for stable ignition and consistent thermal output. Engineered to withstand high static pressures and continuous duty cycles, the 100145009 blower ensures optimal flame signals and prevents common ignition lockout errors. Whether you are performing a Lochinvar boiler repair or routine maintenance on an A.O. Smith water heater, this genuine OEM exhaust inducer fan maintains the integrated control system's modulation requirements. Its robust housing and balanced impeller minimize vibration, extending the service life of the heat exchanger by preventing moisture buildup and ensuring proper flue gas venting. This HVAC replacement part is essential for restoring system pressure differentials and maintaining peak operational efficiency in demanding mechanical room environments.

• OEM Compatibility: Direct replacement for Lochinvar 100145009 and FAN3037, ensuring exact fitment without field modifications.
• Precise Modulation: Engineered to communicate with the integrated control board for accurate variable speed combustion air delivery.
• Durable Construction: Built with high-temperature tolerant bearings and a corrosion-resistant housing to handle aggressive flue gases.
• Simplified Installation: Standardized mounting footprint and electrical connections reduce technician downtime during emergency service calls.

How do I know if the Lochinvar 100145009 fan assembly is failing?
Common indicators include localized grinding noises from the motor, repeated ignition failure codes on the boiler display, or a failure to reach the required pressure switch setpoint during the pre-purge cycle.

Is the 100145009 interchangeable with the FAN3037?
Yes, the 100145009 and FAN3037 are the same technical component. These part numbers are often interchanged between Lochinvar and A.O. Smith legacy and current equipment catalogs.

Does this assembly include the mounting gasket?
While the assembly includes the motor and impeller housing, it is recommended to inspect and replace the mounting gasket during installation to ensure a gas-tight seal on the combustion chamber.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.